What is guided wave ultrasonic testing?

Guided Wave Ultrasonics (GWUT) is a nondestructive examination technique that projects sound waves along pipe walls in order to detect corrosion or other damage. Guided wave ultrasonic testing is also sometimes referred to as long range ultrasonic testing (LRUT).

What is Long Range UT?

Long range ultrasonic testing provides rapid screening for corrosion and erosion in pipelines. Long range ultrasonic testing (LRUT), also known as guided wave ultrasonic testing, is a fast and cost-effective method for inspecting long lengths of pipe.

What is guided wave technology?

Guided wave testing (GWT) is a non-destructive evaluation method. The method employs acoustic waves that propagate along an elongated structure while guided by its boundaries. This allows the waves to travel a long distance with little loss in energy.

What are guided waves give examples?

Lamb waves are guided waves traveling along thin plates, whereas Rayleigh waves are guided waves constrained to the surface. Guided waves can also exist in solid and hollow cylinders, as well as in shell structures.

How does a guided wave radar work?

Guided wave radar is based on microwave technology. Microwaves are only affected by materials that reflect energy which means that temperature variations, dust, pressure, and viscosity do not affect accuracy. The device sends a low energy microwave pulse down a probe.

What is tube Iris inspection?

IRIS is an ultrasonic method used for the non-destructive testing of pipes and tubes. Many plant operators in the oil, gas and power generation industries are faced with the challenges of maximising the efficiency and life expectancy of their assets but without sacrificing safety and reliability.

How do wave guides work?

A waveguide is a special form of transmission line consisting of a hollow, metal tube. The tube wall provides distributed inductance, while the empty space between the tube walls provide distributed capacitance. Wave guides conduct microwave energy at lower loss than coaxial cables.

Why do we use waveguide?

Waveguides are used to direct and propagate Electromagnetic waves from one point to another. They are generally used to transmit high frequency waves such as Microwaves, Radio waves, Infrared waves etc. For low frequency waves which are less than 1 MHz, parallel transmission lines or co-axial cables are used.

What is the difference between radar and ultrasonic level transmitter?

All radars, including 80 GHz radar sensors, emit radio microwaves, while ultrasonic transmitters use sound waves. Radar microwaves are electromagnetic waves, which means the signal doesn’t require a medium – it can travel in a vacuum.

What is guided wave radar transmitter?

Guided wave radar level transmitters. For high-accuracy, reliable measurements even in harsh conditions. Using radar frequencies, guided in a probe going into the monitored vessel, guided-wave radar level measurement provides continuous, reliable measurements with high accuracy.

What is eddy current testing of tubes?

Eddy current testing uses electromagnetic induction to identify defects in tubing. A probe is inserted into the tube and pushed through the entire length of the tube. Eddy currents are generated by the electromagnetic coils in the probe and monitored simultaneously by measuring probe electrical impedance.

What is remote field eddy current testing?

Remote Field Eddy Current Testing is a Non Destructive Testing method which uses the Electromagnetic principle to conduct inspection. This testing is mainly used for finding defects in ferromagnetic components.

What is difference between UT and PAUT?

Phased array ultrasonic testing ( PAUT ) is a form of ultrasonic testing ( UT ). The difference between phased array ultrasonic testing vs ultrasonic testing is the transducer. A PAUT transducer uses multiple elements during a scan.

What is the difference between PAUT and Aut?

PAUT can be set up for single welds or short runs and set-up and scan pattern chosen accordingly . AUT needs lots of preparation work, demonstrations, verification, the equipment and id only economical for medium to long runs of pipeline with same OD (wall thickness changes can be accommodated).

What is PAUT used for?

Phased arrays are used for a wide variety of inspection and measurement applications, and they can be used for any job done by conventional ultrasonics. For example, phased arrays are used to detect and image defects including cracks, voids, and pits caused by corrosion.

Why is waveguide used?

Rectangular and circular waveguides are commonly used to connect feeds of parabolic dishes to their electronics, either low-noise receivers or power amplifier/transmitters. Waveguides are used in scientific instruments to measure optical, acoustic and elastic properties of materials and objects.